<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>用户管理</title>
<script type="text/javascript" src="jquery-3.3.1.min.js"></script>
<script type="text/javascript" src="user.js"></script>
</head>
<body>
<button id=refresh_button> 刷新 </button> <button id="add_button"> 增加 </button> 
<table border="1" width="400" id="list">

</table>
</body>
</html>